PUMA, antiProton unstable matter annihilation - PUMA collaboration T. Aumann, W. Bartmann, O. Boine-Frankenheim, A. Bouvard, A. Broche, F. Butin, D. Calvet, J. Carbonell, P. Chiggiato, H. De Gersem et al. (45 more) Eur. Phys. J. A, 58 5 (2022) 88 Published online: 04 May 2022 DOI: 10.1140/epja/s10050-022-00713-x